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Finding the Fourth Proportional to 656.76, 980.36 and 607.96

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Solution

The fourth proportional to 656.76, 980.36 and 607.96 is: 907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.76 : 980.36 = 607.96 : x
  2. Step 2: Convert to fraction form
    656.76/980.36 = 607.96/x
  3. Step 3: Cross multiply
    656.76x = 980.36 × 607.96
  4. Step 4: Simplify right side
    656.76x = 596,019.67
  5. Step 5: Solve for x
    x = 596,019.67/656.76
  6. Step 6: Final answer
    x = 907.52

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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.