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Finding the Fourth Proportional to 1,041.99, 1,436.92 and 885.07

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Solution

The fourth proportional to 1,041.99, 1,436.92 and 885.07 is: 1,220.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.99 : 1,436.92 = 885.07 : x
  2. Step 2: Convert to fraction form
    1,041.99/1,436.92 = 885.07/x
  3. Step 3: Cross multiply
    1,041.99x = 1,436.92 × 885.07
  4. Step 4: Simplify right side
    1,041.99x = 1,271,774.78
  5. Step 5: Solve for x
    x = 1,271,774.78/1,041.99
  6. Step 6: Final answer
    x = 1,220.52

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1.5x scale

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.