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Finding the Fourth Proportional to 887.35, 1,331.02 and 521.93

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Solution

The fourth proportional to 887.35, 1,331.02 and 521.93 is: 782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.35 : 1,331.02 = 521.93 : x
  2. Step 2: Convert to fraction form
    887.35/1,331.02 = 521.93/x
  3. Step 3: Cross multiply
    887.35x = 1,331.02 × 521.93
  4. Step 4: Simplify right side
    887.35x = 694,699.27
  5. Step 5: Solve for x
    x = 694,699.27/887.35
  6. Step 6: Final answer
    x = 782.90

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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.