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Finding the Fourth Proportional to 1,569.15, 2,352.18 and 692.13

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Solution

The fourth proportional to 1,569.15, 2,352.18 and 692.13 is: 1,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.15 : 2,352.18 = 692.13 : x
  2. Step 2: Convert to fraction form
    1,569.15/2,352.18 = 692.13/x
  3. Step 3: Cross multiply
    1,569.15x = 2,352.18 × 692.13
  4. Step 4: Simplify right side
    1,569.15x = 1,628,014.34
  5. Step 5: Solve for x
    x = 1,628,014.34/1,569.15
  6. Step 6: Final answer
    x = 1,037.51

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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.