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Finding the Fourth Proportional to 64.37, 88.85 and 43.69

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Solution

The fourth proportional to 64.37, 88.85 and 43.69 is: 60.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.37 : 88.85 = 43.69 : x
  2. Step 2: Convert to fraction form
    64.37/88.85 = 43.69/x
  3. Step 3: Cross multiply
    64.37x = 88.85 × 43.69
  4. Step 4: Simplify right side
    64.37x = 3,881.86
  5. Step 5: Solve for x
    x = 3,881.86/64.37
  6. Step 6: Final answer
    x = 60.31

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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.