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Finding the Fourth Proportional to 955.06, 1,317.99 and 562.09

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Solution

The fourth proportional to 955.06, 1,317.99 and 562.09 is: 775.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.06 : 1,317.99 = 562.09 : x
  2. Step 2: Convert to fraction form
    955.06/1,317.99 = 562.09/x
  3. Step 3: Cross multiply
    955.06x = 1,317.99 × 562.09
  4. Step 4: Simplify right side
    955.06x = 740,829.00
  5. Step 5: Solve for x
    x = 740,829.00/955.06
  6. Step 6: Final answer
    x = 775.69

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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.