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Finding the Fourth Proportional to 889.97, 1,335.03 and 304.95

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Solution

The fourth proportional to 889.97, 1,335.03 and 304.95 is: 457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.97 : 1,335.03 = 304.95 : x
  2. Step 2: Convert to fraction form
    889.97/1,335.03 = 304.95/x
  3. Step 3: Cross multiply
    889.97x = 1,335.03 × 304.95
  4. Step 4: Simplify right side
    889.97x = 407,117.40
  5. Step 5: Solve for x
    x = 407,117.40/889.97
  6. Step 6: Final answer
    x = 457.45

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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.