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Finding the Fourth Proportional to 1,559.79, 2,339.95 and 635.98

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Solution

The fourth proportional to 1,559.79, 2,339.95 and 635.98 is: 954.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.79 : 2,339.95 = 635.98 : x
  2. Step 2: Convert to fraction form
    1,559.79/2,339.95 = 635.98/x
  3. Step 3: Cross multiply
    1,559.79x = 2,339.95 × 635.98
  4. Step 4: Simplify right side
    1,559.79x = 1,488,161.40
  5. Step 5: Solve for x
    x = 1,488,161.40/1,559.79
  6. Step 6: Final answer
    x = 954.08

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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.