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Finding the Fourth Proportional to 575.04, 862.05 and 478.34

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Solution

The fourth proportional to 575.04, 862.05 and 478.34 is: 717.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.04 : 862.05 = 478.34 : x
  2. Step 2: Convert to fraction form
    575.04/862.05 = 478.34/x
  3. Step 3: Cross multiply
    575.04x = 862.05 × 478.34
  4. Step 4: Simplify right side
    575.04x = 412,352.16
  5. Step 5: Solve for x
    x = 412,352.16/575.04
  6. Step 6: Final answer
    x = 717.08

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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.