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Finding the Fourth Proportional to 1,156.28, 1,595.57 and 658.80

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Solution

The fourth proportional to 1,156.28, 1,595.57 and 658.80 is: 909.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.28 : 1,595.57 = 658.80 : x
  2. Step 2: Convert to fraction form
    1,156.28/1,595.57 = 658.80/x
  3. Step 3: Cross multiply
    1,156.28x = 1,595.57 × 658.80
  4. Step 4: Simplify right side
    1,156.28x = 1,051,158.22
  5. Step 5: Solve for x
    x = 1,051,158.22/1,156.28
  6. Step 6: Final answer
    x = 909.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.