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Finding the Fourth Proportional to 554.52, 760.78 and 540.15

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Solution

The fourth proportional to 554.52, 760.78 and 540.15 is: 741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.52 : 760.78 = 540.15 : x
  2. Step 2: Convert to fraction form
    554.52/760.78 = 540.15/x
  3. Step 3: Cross multiply
    554.52x = 760.78 × 540.15
  4. Step 4: Simplify right side
    554.52x = 410,935.32
  5. Step 5: Solve for x
    x = 410,935.32/554.52
  6. Step 6: Final answer
    x = 741.06

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.