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Finding the Fourth Proportional to 1,023.18, 1,411.43 and 692.07

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Solution

The fourth proportional to 1,023.18, 1,411.43 and 692.07 is: 954.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.18 : 1,411.43 = 692.07 : x
  2. Step 2: Convert to fraction form
    1,023.18/1,411.43 = 692.07/x
  3. Step 3: Cross multiply
    1,023.18x = 1,411.43 × 692.07
  4. Step 4: Simplify right side
    1,023.18x = 976,804.90
  5. Step 5: Solve for x
    x = 976,804.90/1,023.18
  6. Step 6: Final answer
    x = 954.68

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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.