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Finding the Fourth Proportional to 993.52, 1,490.28 and 377.08

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Solution

The fourth proportional to 993.52, 1,490.28 and 377.08 is: 565.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.52 : 1,490.28 = 377.08 : x
  2. Step 2: Convert to fraction form
    993.52/1,490.28 = 377.08/x
  3. Step 3: Cross multiply
    993.52x = 1,490.28 × 377.08
  4. Step 4: Simplify right side
    993.52x = 561,945.45
  5. Step 5: Solve for x
    x = 561,945.45/993.52
  6. Step 6: Final answer
    x = 565.61

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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.