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Finding the Fourth Proportional to 162.60, 242.64 and 135.60

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Solution

The fourth proportional to 162.60, 242.64 and 135.60 is: 202.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.60 : 242.64 = 135.60 : x
  2. Step 2: Convert to fraction form
    162.60/242.64 = 135.60/x
  3. Step 3: Cross multiply
    162.60x = 242.64 × 135.60
  4. Step 4: Simplify right side
    162.60x = 32,901.98
  5. Step 5: Solve for x
    x = 32,901.98/162.60
  6. Step 6: Final answer
    x = 202.35

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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.