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Finding the Fourth Proportional to 614.80, 849.06 and 428.76

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Solution

The fourth proportional to 614.80, 849.06 and 428.76 is: 592.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.80 : 849.06 = 428.76 : x
  2. Step 2: Convert to fraction form
    614.80/849.06 = 428.76/x
  3. Step 3: Cross multiply
    614.80x = 849.06 × 428.76
  4. Step 4: Simplify right side
    614.80x = 364,042.97
  5. Step 5: Solve for x
    x = 364,042.97/614.80
  6. Step 6: Final answer
    x = 592.13

Related Problems

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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.