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Finding the Fourth Proportional to 570.66, 857.54 and 310.85

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Solution

The fourth proportional to 570.66, 857.54 and 310.85 is: 467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.66 : 857.54 = 310.85 : x
  2. Step 2: Convert to fraction form
    570.66/857.54 = 310.85/x
  3. Step 3: Cross multiply
    570.66x = 857.54 × 310.85
  4. Step 4: Simplify right side
    570.66x = 266,569.09
  5. Step 5: Solve for x
    x = 266,569.09/570.66
  6. Step 6: Final answer
    x = 467.12

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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.