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Finding the Fourth Proportional to 530.87, 733.59 and 391.14

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Solution

The fourth proportional to 530.87, 733.59 and 391.14 is: 540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.87 : 733.59 = 391.14 : x
  2. Step 2: Convert to fraction form
    530.87/733.59 = 391.14/x
  3. Step 3: Cross multiply
    530.87x = 733.59 × 391.14
  4. Step 4: Simplify right side
    530.87x = 286,936.39
  5. Step 5: Solve for x
    x = 286,936.39/530.87
  6. Step 6: Final answer
    x = 540.51

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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.