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Finding the Fourth Proportional to 651.20, 976.02 and 342.89

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Solution

The fourth proportional to 651.20, 976.02 and 342.89 is: 513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.20 : 976.02 = 342.89 : x
  2. Step 2: Convert to fraction form
    651.20/976.02 = 342.89/x
  3. Step 3: Cross multiply
    651.20x = 976.02 × 342.89
  4. Step 4: Simplify right side
    651.20x = 334,666.28
  5. Step 5: Solve for x
    x = 334,666.28/651.20
  6. Step 6: Final answer
    x = 513.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.