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Finding the Fourth Proportional to 1,059.05, 1,461.58 and 616.98

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Solution

The fourth proportional to 1,059.05, 1,461.58 and 616.98 is: 851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.05 : 1,461.58 = 616.98 : x
  2. Step 2: Convert to fraction form
    1,059.05/1,461.58 = 616.98/x
  3. Step 3: Cross multiply
    1,059.05x = 1,461.58 × 616.98
  4. Step 4: Simplify right side
    1,059.05x = 901,762.54
  5. Step 5: Solve for x
    x = 901,762.54/1,059.05
  6. Step 6: Final answer
    x = 851.48

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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.