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Finding the Fourth Proportional to 624.15, 934.20 and 575.55

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Solution

The fourth proportional to 624.15, 934.20 and 575.55 is: 861.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.15 : 934.20 = 575.55 : x
  2. Step 2: Convert to fraction form
    624.15/934.20 = 575.55/x
  3. Step 3: Cross multiply
    624.15x = 934.20 × 575.55
  4. Step 4: Simplify right side
    624.15x = 537,678.81
  5. Step 5: Solve for x
    x = 537,678.81/624.15
  6. Step 6: Final answer
    x = 861.46

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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.