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Finding the Fourth Proportional to 1,705.81, 2,558.66 and 473.30

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Solution

The fourth proportional to 1,705.81, 2,558.66 and 473.30 is: 709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.81 : 2,558.66 = 473.30 : x
  2. Step 2: Convert to fraction form
    1,705.81/2,558.66 = 473.30/x
  3. Step 3: Cross multiply
    1,705.81x = 2,558.66 × 473.30
  4. Step 4: Simplify right side
    1,705.81x = 1,211,000.98
  5. Step 5: Solve for x
    x = 1,211,000.98/1,705.81
  6. Step 6: Final answer
    x = 709.93

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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.