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Finding the Fourth Proportional to 889.18, 1,333.98 and 402.24

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Solution

The fourth proportional to 889.18, 1,333.98 and 402.24 is: 603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.18 : 1,333.98 = 402.24 : x
  2. Step 2: Convert to fraction form
    889.18/1,333.98 = 402.24/x
  3. Step 3: Cross multiply
    889.18x = 1,333.98 × 402.24
  4. Step 4: Simplify right side
    889.18x = 536,580.12
  5. Step 5: Solve for x
    x = 536,580.12/889.18
  6. Step 6: Final answer
    x = 603.45

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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.