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Finding the Fourth Proportional to 623.52, 857.52 and 545.76

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Solution

The fourth proportional to 623.52, 857.52 and 545.76 is: 750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.52 : 857.52 = 545.76 : x
  2. Step 2: Convert to fraction form
    623.52/857.52 = 545.76/x
  3. Step 3: Cross multiply
    623.52x = 857.52 × 545.76
  4. Step 4: Simplify right side
    623.52x = 468,000.12
  5. Step 5: Solve for x
    x = 468,000.12/623.52
  6. Step 6: Final answer
    x = 750.58

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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.