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Finding the Fourth Proportional to 954.08, 1,315.48 and 622.36

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Solution

The fourth proportional to 954.08, 1,315.48 and 622.36 is: 858.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.08 : 1,315.48 = 622.36 : x
  2. Step 2: Convert to fraction form
    954.08/1,315.48 = 622.36/x
  3. Step 3: Cross multiply
    954.08x = 1,315.48 × 622.36
  4. Step 4: Simplify right side
    954.08x = 818,702.13
  5. Step 5: Solve for x
    x = 818,702.13/954.08
  6. Step 6: Final answer
    x = 858.11

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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.