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Finding the Fourth Proportional to 891.88, 1,337.61 and 502.05

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Solution

The fourth proportional to 891.88, 1,337.61 and 502.05 is: 752.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    891.88 : 1,337.61 = 502.05 : x
  2. Step 2: Convert to fraction form
    891.88/1,337.61 = 502.05/x
  3. Step 3: Cross multiply
    891.88x = 1,337.61 × 502.05
  4. Step 4: Simplify right side
    891.88x = 671,547.10
  5. Step 5: Solve for x
    x = 671,547.10/891.88
  6. Step 6: Final answer
    x = 752.96

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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.