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Finding the Fourth Proportional to 554.18, 765.70 and 534.47

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Solution

The fourth proportional to 554.18, 765.70 and 534.47 is: 738.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.18 : 765.70 = 534.47 : x
  2. Step 2: Convert to fraction form
    554.18/765.70 = 534.47/x
  3. Step 3: Cross multiply
    554.18x = 765.70 × 534.47
  4. Step 4: Simplify right side
    554.18x = 409,238.51
  5. Step 5: Solve for x
    x = 409,238.51/554.18
  6. Step 6: Final answer
    x = 738.46

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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.