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Finding the Fourth Proportional to 955.17, 1,429.09 and 544.50

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Solution

The fourth proportional to 955.17, 1,429.09 and 544.50 is: 814.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.17 : 1,429.09 = 544.50 : x
  2. Step 2: Convert to fraction form
    955.17/1,429.09 = 544.50/x
  3. Step 3: Cross multiply
    955.17x = 1,429.09 × 544.50
  4. Step 4: Simplify right side
    955.17x = 778,139.51
  5. Step 5: Solve for x
    x = 778,139.51/955.17
  6. Step 6: Final answer
    x = 814.66

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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.