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Finding the Fourth Proportional to 890, 1,335 and 377.36

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Solution

The fourth proportional to 890, 1,335 and 377.36 is: 566.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    890 : 1,335 = 377.36 : x
  2. Step 2: Convert to fraction form
    890/1,335 = 377.36/x
  3. Step 3: Cross multiply
    890x = 1,335 × 377.36
  4. Step 4: Simplify right side
    890x = 503,775.60
  5. Step 5: Solve for x
    x = 503,775.60/890
  6. Step 6: Final answer
    x = 566.04

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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.