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Finding the Fourth Proportional to 954.11, 1,315.98 and 875.67

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Solution

The fourth proportional to 954.11, 1,315.98 and 875.67 is: 1,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.11 : 1,315.98 = 875.67 : x
  2. Step 2: Convert to fraction form
    954.11/1,315.98 = 875.67/x
  3. Step 3: Cross multiply
    954.11x = 1,315.98 × 875.67
  4. Step 4: Simplify right side
    954.11x = 1,152,370.78
  5. Step 5: Solve for x
    x = 1,152,370.78/954.11
  6. Step 6: Final answer
    x = 1,207.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.