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Finding the Fourth Proportional to 586.71, 808.92 and 429.21

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Solution

The fourth proportional to 586.71, 808.92 and 429.21 is: 591.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.71 : 808.92 = 429.21 : x
  2. Step 2: Convert to fraction form
    586.71/808.92 = 429.21/x
  3. Step 3: Cross multiply
    586.71x = 808.92 × 429.21
  4. Step 4: Simplify right side
    586.71x = 347,196.55
  5. Step 5: Solve for x
    x = 347,196.55/586.71
  6. Step 6: Final answer
    x = 591.77

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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.