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Finding the Fourth Proportional to 491.95, 738.38 and 248.64

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Solution

The fourth proportional to 491.95, 738.38 and 248.64 is: 373.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.95 : 738.38 = 248.64 : x
  2. Step 2: Convert to fraction form
    491.95/738.38 = 248.64/x
  3. Step 3: Cross multiply
    491.95x = 738.38 × 248.64
  4. Step 4: Simplify right side
    491.95x = 183,590.48
  5. Step 5: Solve for x
    x = 183,590.48/491.95
  6. Step 6: Final answer
    x = 373.19

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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.