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Finding the Fourth Proportional to 1,798.58, 2,697.80 and 703.15

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Solution

The fourth proportional to 1,798.58, 2,697.80 and 703.15 is: 1,054.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.58 : 2,697.80 = 703.15 : x
  2. Step 2: Convert to fraction form
    1,798.58/2,697.80 = 703.15/x
  3. Step 3: Cross multiply
    1,798.58x = 2,697.80 × 703.15
  4. Step 4: Simplify right side
    1,798.58x = 1,896,947.81
  5. Step 5: Solve for x
    x = 1,896,947.81/1,798.58
  6. Step 6: Final answer
    x = 1,054.69

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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.