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Finding the Fourth Proportional to 1,657.48, 2,484.60 and 684.28

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Solution

The fourth proportional to 1,657.48, 2,484.60 and 684.28 is: 1,025.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.48 : 2,484.60 = 684.28 : x
  2. Step 2: Convert to fraction form
    1,657.48/2,484.60 = 684.28/x
  3. Step 3: Cross multiply
    1,657.48x = 2,484.60 × 684.28
  4. Step 4: Simplify right side
    1,657.48x = 1,700,162.09
  5. Step 5: Solve for x
    x = 1,700,162.09/1,657.48
  6. Step 6: Final answer
    x = 1,025.75

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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.