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Finding the Fourth Proportional to 620.76, 929.76 and 607.08

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Solution

The fourth proportional to 620.76, 929.76 and 607.08 is: 909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.76 : 929.76 = 607.08 : x
  2. Step 2: Convert to fraction form
    620.76/929.76 = 607.08/x
  3. Step 3: Cross multiply
    620.76x = 929.76 × 607.08
  4. Step 4: Simplify right side
    620.76x = 564,438.70
  5. Step 5: Solve for x
    x = 564,438.70/620.76
  6. Step 6: Final answer
    x = 909.27

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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.