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Finding the Fourth Proportional to 976.04, 1,460.94 and 542.12

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Solution

The fourth proportional to 976.04, 1,460.94 and 542.12 is: 811.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.04 : 1,460.94 = 542.12 : x
  2. Step 2: Convert to fraction form
    976.04/1,460.94 = 542.12/x
  3. Step 3: Cross multiply
    976.04x = 1,460.94 × 542.12
  4. Step 4: Simplify right side
    976.04x = 792,004.79
  5. Step 5: Solve for x
    x = 792,004.79/976.04
  6. Step 6: Final answer
    x = 811.45

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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.