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Finding the Fourth Proportional to 1,303.35, 1,798.61 and 713.85

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Solution

The fourth proportional to 1,303.35, 1,798.61 and 713.85 is: 985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.35 : 1,798.61 = 713.85 : x
  2. Step 2: Convert to fraction form
    1,303.35/1,798.61 = 713.85/x
  3. Step 3: Cross multiply
    1,303.35x = 1,798.61 × 713.85
  4. Step 4: Simplify right side
    1,303.35x = 1,283,934.18
  5. Step 5: Solve for x
    x = 1,283,934.18/1,303.35
  6. Step 6: Final answer
    x = 985.10

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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.