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Finding the Fourth Proportional to 586.21, 879.01 and 293.40

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Solution

The fourth proportional to 586.21, 879.01 and 293.40 is: 439.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.21 : 879.01 = 293.40 : x
  2. Step 2: Convert to fraction form
    586.21/879.01 = 293.40/x
  3. Step 3: Cross multiply
    586.21x = 879.01 × 293.40
  4. Step 4: Simplify right side
    586.21x = 257,901.53
  5. Step 5: Solve for x
    x = 257,901.53/586.21
  6. Step 6: Final answer
    x = 439.95

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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.