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Finding the Fourth Proportional to 570.48, 854.16 and 478.92

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Solution

The fourth proportional to 570.48, 854.16 and 478.92 is: 717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.48 : 854.16 = 478.92 : x
  2. Step 2: Convert to fraction form
    570.48/854.16 = 478.92/x
  3. Step 3: Cross multiply
    570.48x = 854.16 × 478.92
  4. Step 4: Simplify right side
    570.48x = 409,074.31
  5. Step 5: Solve for x
    x = 409,074.31/570.48
  6. Step 6: Final answer
    x = 717.07

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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.