Home / 1,056.32-1,583.64-478.52

Finding the Fourth Proportional to 1,056.32, 1,583.64 and 478.52

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Solution

The fourth proportional to 1,056.32, 1,583.64 and 478.52 is: 717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.32 : 1,583.64 = 478.52 : x
  2. Step 2: Convert to fraction form
    1,056.32/1,583.64 = 478.52/x
  3. Step 3: Cross multiply
    1,056.32x = 1,583.64 × 478.52
  4. Step 4: Simplify right side
    1,056.32x = 757,803.41
  5. Step 5: Solve for x
    x = 757,803.41/1,056.32
  6. Step 6: Final answer
    x = 717.40

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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.