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Finding the Fourth Proportional to 738.50, 1,018.77 and 591.32

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Solution

The fourth proportional to 738.50, 1,018.77 and 591.32 is: 815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.50 : 1,018.77 = 591.32 : x
  2. Step 2: Convert to fraction form
    738.50/1,018.77 = 591.32/x
  3. Step 3: Cross multiply
    738.50x = 1,018.77 × 591.32
  4. Step 4: Simplify right side
    738.50x = 602,419.08
  5. Step 5: Solve for x
    x = 602,419.08/738.50
  6. Step 6: Final answer
    x = 815.73

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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.