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Finding the Fourth Proportional to 889.50, 1,334.09 and 240.15

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Solution

The fourth proportional to 889.50, 1,334.09 and 240.15 is: 360.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.50 : 1,334.09 = 240.15 : x
  2. Step 2: Convert to fraction form
    889.50/1,334.09 = 240.15/x
  3. Step 3: Cross multiply
    889.50x = 1,334.09 × 240.15
  4. Step 4: Simplify right side
    889.50x = 320,373.84
  5. Step 5: Solve for x
    x = 320,373.84/889.50
  6. Step 6: Final answer
    x = 360.17

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Double scale
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1.5x scale

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.