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Finding the Fourth Proportional to 1,708.45, 2,563.28 and 554.20

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Solution

The fourth proportional to 1,708.45, 2,563.28 and 554.20 is: 831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.45 : 2,563.28 = 554.20 : x
  2. Step 2: Convert to fraction form
    1,708.45/2,563.28 = 554.20/x
  3. Step 3: Cross multiply
    1,708.45x = 2,563.28 × 554.20
  4. Step 4: Simplify right side
    1,708.45x = 1,420,569.78
  5. Step 5: Solve for x
    x = 1,420,569.78/1,708.45
  6. Step 6: Final answer
    x = 831.50

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1.5x scale

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.