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Finding the Fourth Proportional to 1,135.65, 1,703.29 and 366.15

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Solution

The fourth proportional to 1,135.65, 1,703.29 and 366.15 is: 549.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.65 : 1,703.29 = 366.15 : x
  2. Step 2: Convert to fraction form
    1,135.65/1,703.29 = 366.15/x
  3. Step 3: Cross multiply
    1,135.65x = 1,703.29 × 366.15
  4. Step 4: Simplify right side
    1,135.65x = 623,662.98
  5. Step 5: Solve for x
    x = 623,662.98/1,135.65
  6. Step 6: Final answer
    x = 549.17

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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.