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Finding the Fourth Proportional to 50.04, 74.70 and 42.35

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Solution

The fourth proportional to 50.04, 74.70 and 42.35 is: 63.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.04 : 74.70 = 42.35 : x
  2. Step 2: Convert to fraction form
    50.04/74.70 = 42.35/x
  3. Step 3: Cross multiply
    50.04x = 74.70 × 42.35
  4. Step 4: Simplify right side
    50.04x = 3,164.00
  5. Step 5: Solve for x
    x = 3,164.00/50.04
  6. Step 6: Final answer
    x = 63.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.