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Finding the Fourth Proportional to 887.59, 1,225.15 and 607.71

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Solution

The fourth proportional to 887.59, 1,225.15 and 607.71 is: 838.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.59 : 1,225.15 = 607.71 : x
  2. Step 2: Convert to fraction form
    887.59/1,225.15 = 607.71/x
  3. Step 3: Cross multiply
    887.59x = 1,225.15 × 607.71
  4. Step 4: Simplify right side
    887.59x = 744,535.91
  5. Step 5: Solve for x
    x = 744,535.91/887.59
  6. Step 6: Final answer
    x = 838.83

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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.