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Finding the Fourth Proportional to 530.01, 788.87 and 515.43

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Solution

The fourth proportional to 530.01, 788.87 and 515.43 is: 767.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.01 : 788.87 = 515.43 : x
  2. Step 2: Convert to fraction form
    530.01/788.87 = 515.43/x
  3. Step 3: Cross multiply
    530.01x = 788.87 × 515.43
  4. Step 4: Simplify right side
    530.01x = 406,607.26
  5. Step 5: Solve for x
    x = 406,607.26/530.01
  6. Step 6: Final answer
    x = 767.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.