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Finding the Fourth Proportional to 53.40, 73.58 and 42.46

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Solution

The fourth proportional to 53.40, 73.58 and 42.46 is: 58.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.40 : 73.58 = 42.46 : x
  2. Step 2: Convert to fraction form
    53.40/73.58 = 42.46/x
  3. Step 3: Cross multiply
    53.40x = 73.58 × 42.46
  4. Step 4: Simplify right side
    53.40x = 3,124.21
  5. Step 5: Solve for x
    x = 3,124.21/53.40
  6. Step 6: Final answer
    x = 58.51

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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.