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Finding the Fourth Proportional to 566.38, 781.51 and 380.18

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Solution

The fourth proportional to 566.38, 781.51 and 380.18 is: 524.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.38 : 781.51 = 380.18 : x
  2. Step 2: Convert to fraction form
    566.38/781.51 = 380.18/x
  3. Step 3: Cross multiply
    566.38x = 781.51 × 380.18
  4. Step 4: Simplify right side
    566.38x = 297,114.47
  5. Step 5: Solve for x
    x = 297,114.47/566.38
  6. Step 6: Final answer
    x = 524.59

Related Problems

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.