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Finding the Fourth Proportional to 570.59, 855.92 and 296.76

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Solution

The fourth proportional to 570.59, 855.92 and 296.76 is: 445.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.59 : 855.92 = 296.76 : x
  2. Step 2: Convert to fraction form
    570.59/855.92 = 296.76/x
  3. Step 3: Cross multiply
    570.59x = 855.92 × 296.76
  4. Step 4: Simplify right side
    570.59x = 254,005.10
  5. Step 5: Solve for x
    x = 254,005.10/570.59
  6. Step 6: Final answer
    x = 445.16

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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.