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Finding the Fourth Proportional to 436.50, 658.02 and 430.02

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Solution

The fourth proportional to 436.50, 658.02 and 430.02 is: 648.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.50 : 658.02 = 430.02 : x
  2. Step 2: Convert to fraction form
    436.50/658.02 = 430.02/x
  3. Step 3: Cross multiply
    436.50x = 658.02 × 430.02
  4. Step 4: Simplify right side
    436.50x = 282,961.76
  5. Step 5: Solve for x
    x = 282,961.76/436.50
  6. Step 6: Final answer
    x = 648.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.