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Finding the Fourth Proportional to 393.19, 542.23 and 267.01

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Solution

The fourth proportional to 393.19, 542.23 and 267.01 is: 368.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.19 : 542.23 = 267.01 : x
  2. Step 2: Convert to fraction form
    393.19/542.23 = 267.01/x
  3. Step 3: Cross multiply
    393.19x = 542.23 × 267.01
  4. Step 4: Simplify right side
    393.19x = 144,778.81
  5. Step 5: Solve for x
    x = 144,778.81/393.19
  6. Step 6: Final answer
    x = 368.22

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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.