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Finding the Fourth Proportional to 647.52, 972.53 and 555.18

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Solution

The fourth proportional to 647.52, 972.53 and 555.18 is: 833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.52 : 972.53 = 555.18 : x
  2. Step 2: Convert to fraction form
    647.52/972.53 = 555.18/x
  3. Step 3: Cross multiply
    647.52x = 972.53 × 555.18
  4. Step 4: Simplify right side
    647.52x = 539,926.43
  5. Step 5: Solve for x
    x = 539,926.43/647.52
  6. Step 6: Final answer
    x = 833.84

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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.