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Finding the Fourth Proportional to 1,027.62, 1,417.36 and 708.70

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Solution

The fourth proportional to 1,027.62, 1,417.36 and 708.70 is: 977.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.62 : 1,417.36 = 708.70 : x
  2. Step 2: Convert to fraction form
    1,027.62/1,417.36 = 708.70/x
  3. Step 3: Cross multiply
    1,027.62x = 1,417.36 × 708.70
  4. Step 4: Simplify right side
    1,027.62x = 1,004,483.03
  5. Step 5: Solve for x
    x = 1,004,483.03/1,027.62
  6. Step 6: Final answer
    x = 977.48

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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.