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Finding the Fourth Proportional to 890.42, 1,335.64 and 602.06

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Solution

The fourth proportional to 890.42, 1,335.64 and 602.06 is: 903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.42 : 1,335.64 = 602.06 : x
  2. Step 2: Convert to fraction form
    890.42/1,335.64 = 602.06/x
  3. Step 3: Cross multiply
    890.42x = 1,335.64 × 602.06
  4. Step 4: Simplify right side
    890.42x = 804,135.42
  5. Step 5: Solve for x
    x = 804,135.42/890.42
  6. Step 6: Final answer
    x = 903.10

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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.