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Finding the Fourth Proportional to 804.84, 1,110.34 and 542.40

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Solution

The fourth proportional to 804.84, 1,110.34 and 542.40 is: 748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.84 : 1,110.34 = 542.40 : x
  2. Step 2: Convert to fraction form
    804.84/1,110.34 = 542.40/x
  3. Step 3: Cross multiply
    804.84x = 1,110.34 × 542.40
  4. Step 4: Simplify right side
    804.84x = 602,248.42
  5. Step 5: Solve for x
    x = 602,248.42/804.84
  6. Step 6: Final answer
    x = 748.28

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1.5x scale

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.