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Finding the Fourth Proportional to 608.28, 840.11 and 542.67

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Solution

The fourth proportional to 608.28, 840.11 and 542.67 is: 749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.28 : 840.11 = 542.67 : x
  2. Step 2: Convert to fraction form
    608.28/840.11 = 542.67/x
  3. Step 3: Cross multiply
    608.28x = 840.11 × 542.67
  4. Step 4: Simplify right side
    608.28x = 455,899.78
  5. Step 5: Solve for x
    x = 455,899.78/608.28
  6. Step 6: Final answer
    x = 749.49

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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.