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Finding the Fourth Proportional to 674.06, 928.80 and 437.72

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Solution

The fourth proportional to 674.06, 928.80 and 437.72 is: 603.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.06 : 928.80 = 437.72 : x
  2. Step 2: Convert to fraction form
    674.06/928.80 = 437.72/x
  3. Step 3: Cross multiply
    674.06x = 928.80 × 437.72
  4. Step 4: Simplify right side
    674.06x = 406,554.34
  5. Step 5: Solve for x
    x = 406,554.34/674.06
  6. Step 6: Final answer
    x = 603.14

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1.5x scale

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.