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Finding the Fourth Proportional to 570.32, 851.11 and 508.80

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Solution

The fourth proportional to 570.32, 851.11 and 508.80 is: 759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.32 : 851.11 = 508.80 : x
  2. Step 2: Convert to fraction form
    570.32/851.11 = 508.80/x
  3. Step 3: Cross multiply
    570.32x = 851.11 × 508.80
  4. Step 4: Simplify right side
    570.32x = 433,044.77
  5. Step 5: Solve for x
    x = 433,044.77/570.32
  6. Step 6: Final answer
    x = 759.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.