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Finding the Fourth Proportional to 913.51, 1,260.06 and 559.24

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Solution

The fourth proportional to 913.51, 1,260.06 and 559.24 is: 771.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.51 : 1,260.06 = 559.24 : x
  2. Step 2: Convert to fraction form
    913.51/1,260.06 = 559.24/x
  3. Step 3: Cross multiply
    913.51x = 1,260.06 × 559.24
  4. Step 4: Simplify right side
    913.51x = 704,670.71
  5. Step 5: Solve for x
    x = 704,670.71/913.51
  6. Step 6: Final answer
    x = 771.39

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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.