Home / 692.15-1,036.77-432.27

Finding the Fourth Proportional to 692.15, 1,036.77 and 432.27

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Solution

The fourth proportional to 692.15, 1,036.77 and 432.27 is: 647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.15 : 1,036.77 = 432.27 : x
  2. Step 2: Convert to fraction form
    692.15/1,036.77 = 432.27/x
  3. Step 3: Cross multiply
    692.15x = 1,036.77 × 432.27
  4. Step 4: Simplify right side
    692.15x = 448,162.95
  5. Step 5: Solve for x
    x = 448,162.95/692.15
  6. Step 6: Final answer
    x = 647.50

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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.