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Finding the Fourth Proportional to 649.35, 972.43 and 586.94

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Solution

The fourth proportional to 649.35, 972.43 and 586.94 is: 878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.35 : 972.43 = 586.94 : x
  2. Step 2: Convert to fraction form
    649.35/972.43 = 586.94/x
  3. Step 3: Cross multiply
    649.35x = 972.43 × 586.94
  4. Step 4: Simplify right side
    649.35x = 570,760.98
  5. Step 5: Solve for x
    x = 570,760.98/649.35
  6. Step 6: Final answer
    x = 878.98

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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.