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Finding the Fourth Proportional to 1,598.13, 2,205.45 and 890.03

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Solution

The fourth proportional to 1,598.13, 2,205.45 and 890.03 is: 1,228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.13 : 2,205.45 = 890.03 : x
  2. Step 2: Convert to fraction form
    1,598.13/2,205.45 = 890.03/x
  3. Step 3: Cross multiply
    1,598.13x = 2,205.45 × 890.03
  4. Step 4: Simplify right side
    1,598.13x = 1,962,901.19
  5. Step 5: Solve for x
    x = 1,962,901.19/1,598.13
  6. Step 6: Final answer
    x = 1,228.25

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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.