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Finding the Fourth Proportional to 64.37, 88.93 and 53.99

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Solution

The fourth proportional to 64.37, 88.93 and 53.99 is: 74.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.37 : 88.93 = 53.99 : x
  2. Step 2: Convert to fraction form
    64.37/88.93 = 53.99/x
  3. Step 3: Cross multiply
    64.37x = 88.93 × 53.99
  4. Step 4: Simplify right side
    64.37x = 4,801.33
  5. Step 5: Solve for x
    x = 4,801.33/64.37
  6. Step 6: Final answer
    x = 74.59

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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.