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Finding the Fourth Proportional to 663.03, 915.03 and 368.28

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Solution

The fourth proportional to 663.03, 915.03 and 368.28 is: 508.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.03 : 915.03 = 368.28 : x
  2. Step 2: Convert to fraction form
    663.03/915.03 = 368.28/x
  3. Step 3: Cross multiply
    663.03x = 915.03 × 368.28
  4. Step 4: Simplify right side
    663.03x = 336,987.25
  5. Step 5: Solve for x
    x = 336,987.25/663.03
  6. Step 6: Final answer
    x = 508.25

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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.