Home / 1,056.57-1,583.90-407.15

Finding the Fourth Proportional to 1,056.57, 1,583.90 and 407.15

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Solution

The fourth proportional to 1,056.57, 1,583.90 and 407.15 is: 610.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.57 : 1,583.90 = 407.15 : x
  2. Step 2: Convert to fraction form
    1,056.57/1,583.90 = 407.15/x
  3. Step 3: Cross multiply
    1,056.57x = 1,583.90 × 407.15
  4. Step 4: Simplify right side
    1,056.57x = 644,884.89
  5. Step 5: Solve for x
    x = 644,884.89/1,056.57
  6. Step 6: Final answer
    x = 610.36

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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.