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Finding the Fourth Proportional to 1,475.71, 2,214.17 and 551.53

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Solution

The fourth proportional to 1,475.71, 2,214.17 and 551.53 is: 827.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.71 : 2,214.17 = 551.53 : x
  2. Step 2: Convert to fraction form
    1,475.71/2,214.17 = 551.53/x
  3. Step 3: Cross multiply
    1,475.71x = 2,214.17 × 551.53
  4. Step 4: Simplify right side
    1,475.71x = 1,221,188.32
  5. Step 5: Solve for x
    x = 1,221,188.32/1,475.71
  6. Step 6: Final answer
    x = 827.52

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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.