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Finding the Fourth Proportional to 242.94, 364.64 and 89.01

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Solution

The fourth proportional to 242.94, 364.64 and 89.01 is: 133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.94 : 364.64 = 89.01 : x
  2. Step 2: Convert to fraction form
    242.94/364.64 = 89.01/x
  3. Step 3: Cross multiply
    242.94x = 364.64 × 89.01
  4. Step 4: Simplify right side
    242.94x = 32,456.16
  5. Step 5: Solve for x
    x = 32,456.16/242.94
  6. Step 6: Final answer
    x = 133.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.