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Finding the Fourth Proportional to 917.41, 1,376.52 and 370.66

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Solution

The fourth proportional to 917.41, 1,376.52 and 370.66 is: 556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.41 : 1,376.52 = 370.66 : x
  2. Step 2: Convert to fraction form
    917.41/1,376.52 = 370.66/x
  3. Step 3: Cross multiply
    917.41x = 1,376.52 × 370.66
  4. Step 4: Simplify right side
    917.41x = 510,220.74
  5. Step 5: Solve for x
    x = 510,220.74/917.41
  6. Step 6: Final answer
    x = 556.15

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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.