Home / 1,056.29-1,583.08-439.70

Finding the Fourth Proportional to 1,056.29, 1,583.08 and 439.70

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Solution

The fourth proportional to 1,056.29, 1,583.08 and 439.70 is: 658.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.29 : 1,583.08 = 439.70 : x
  2. Step 2: Convert to fraction form
    1,056.29/1,583.08 = 439.70/x
  3. Step 3: Cross multiply
    1,056.29x = 1,583.08 × 439.70
  4. Step 4: Simplify right side
    1,056.29x = 696,071.26
  5. Step 5: Solve for x
    x = 696,071.26/1,056.29
  6. Step 6: Final answer
    x = 658.98

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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.