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Finding the Fourth Proportional to 1,048.40, 1,570.80 and 560.96

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Solution

The fourth proportional to 1,048.40, 1,570.80 and 560.96 is: 840.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.40 : 1,570.80 = 560.96 : x
  2. Step 2: Convert to fraction form
    1,048.40/1,570.80 = 560.96/x
  3. Step 3: Cross multiply
    1,048.40x = 1,570.80 × 560.96
  4. Step 4: Simplify right side
    1,048.40x = 881,155.97
  5. Step 5: Solve for x
    x = 881,155.97/1,048.40
  6. Step 6: Final answer
    x = 840.48

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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.