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Finding the Fourth Proportional to 265.66, 366.59 and 172.58

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Solution

The fourth proportional to 265.66, 366.59 and 172.58 is: 238.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.66 : 366.59 = 172.58 : x
  2. Step 2: Convert to fraction form
    265.66/366.59 = 172.58/x
  3. Step 3: Cross multiply
    265.66x = 366.59 × 172.58
  4. Step 4: Simplify right side
    265.66x = 63,264.70
  5. Step 5: Solve for x
    x = 63,264.70/265.66
  6. Step 6: Final answer
    x = 238.14

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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.