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Finding the Fourth Proportional to 586.71, 880.65 and 432.18

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Solution

The fourth proportional to 586.71, 880.65 and 432.18 is: 648.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.71 : 880.65 = 432.18 : x
  2. Step 2: Convert to fraction form
    586.71/880.65 = 432.18/x
  3. Step 3: Cross multiply
    586.71x = 880.65 × 432.18
  4. Step 4: Simplify right side
    586.71x = 380,599.32
  5. Step 5: Solve for x
    x = 380,599.32/586.71
  6. Step 6: Final answer
    x = 648.70

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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.