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Finding the Fourth Proportional to 658.04, 981.95 and 570.56

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Solution

The fourth proportional to 658.04, 981.95 and 570.56 is: 851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.04 : 981.95 = 570.56 : x
  2. Step 2: Convert to fraction form
    658.04/981.95 = 570.56/x
  3. Step 3: Cross multiply
    658.04x = 981.95 × 570.56
  4. Step 4: Simplify right side
    658.04x = 560,253.63
  5. Step 5: Solve for x
    x = 560,253.63/658.04
  6. Step 6: Final answer
    x = 851.40

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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.