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Finding the Fourth Proportional to 750.17, 1,123.32 and 544.57

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Solution

The fourth proportional to 750.17, 1,123.32 and 544.57 is: 815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.17 : 1,123.32 = 544.57 : x
  2. Step 2: Convert to fraction form
    750.17/1,123.32 = 544.57/x
  3. Step 3: Cross multiply
    750.17x = 1,123.32 × 544.57
  4. Step 4: Simplify right side
    750.17x = 611,725.61
  5. Step 5: Solve for x
    x = 611,725.61/750.17
  6. Step 6: Final answer
    x = 815.45

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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.