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Finding the Fourth Proportional to 627.05, 864.55 and 508.59

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Solution

The fourth proportional to 627.05, 864.55 and 508.59 is: 701.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.05 : 864.55 = 508.59 : x
  2. Step 2: Convert to fraction form
    627.05/864.55 = 508.59/x
  3. Step 3: Cross multiply
    627.05x = 864.55 × 508.59
  4. Step 4: Simplify right side
    627.05x = 439,701.91
  5. Step 5: Solve for x
    x = 439,701.91/627.05
  6. Step 6: Final answer
    x = 701.22

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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.