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Finding the Fourth Proportional to 993.71, 1,489.61 and 377.24

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Solution

The fourth proportional to 993.71, 1,489.61 and 377.24 is: 565.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.71 : 1,489.61 = 377.24 : x
  2. Step 2: Convert to fraction form
    993.71/1,489.61 = 377.24/x
  3. Step 3: Cross multiply
    993.71x = 1,489.61 × 377.24
  4. Step 4: Simplify right side
    993.71x = 561,931.14
  5. Step 5: Solve for x
    x = 561,931.14/993.71
  6. Step 6: Final answer
    x = 565.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.