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Finding the Fourth Proportional to 918.06, 1,376.12 and 501.17

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Solution

The fourth proportional to 918.06, 1,376.12 and 501.17 is: 751.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.06 : 1,376.12 = 501.17 : x
  2. Step 2: Convert to fraction form
    918.06/1,376.12 = 501.17/x
  3. Step 3: Cross multiply
    918.06x = 1,376.12 × 501.17
  4. Step 4: Simplify right side
    918.06x = 689,660.67
  5. Step 5: Solve for x
    x = 689,660.67/918.06
  6. Step 6: Final answer
    x = 751.22

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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.