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Finding the Fourth Proportional to 653.48, 981.56 and 556.12

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Solution

The fourth proportional to 653.48, 981.56 and 556.12 is: 835.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.48 : 981.56 = 556.12 : x
  2. Step 2: Convert to fraction form
    653.48/981.56 = 556.12/x
  3. Step 3: Cross multiply
    653.48x = 981.56 × 556.12
  4. Step 4: Simplify right side
    653.48x = 545,865.15
  5. Step 5: Solve for x
    x = 545,865.15/653.48
  6. Step 6: Final answer
    x = 835.32

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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.