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Finding the Fourth Proportional to 460.03, 690.07 and 135.40

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Solution

The fourth proportional to 460.03, 690.07 and 135.40 is: 203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.03 : 690.07 = 135.40 : x
  2. Step 2: Convert to fraction form
    460.03/690.07 = 135.40/x
  3. Step 3: Cross multiply
    460.03x = 690.07 × 135.40
  4. Step 4: Simplify right side
    460.03x = 93,435.48
  5. Step 5: Solve for x
    x = 93,435.48/460.03
  6. Step 6: Final answer
    x = 203.11

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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.