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Finding the Fourth Proportional to 571.68, 856.36 and 456.32

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Solution

The fourth proportional to 571.68, 856.36 and 456.32 is: 683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.68 : 856.36 = 456.32 : x
  2. Step 2: Convert to fraction form
    571.68/856.36 = 456.32/x
  3. Step 3: Cross multiply
    571.68x = 856.36 × 456.32
  4. Step 4: Simplify right side
    571.68x = 390,774.20
  5. Step 5: Solve for x
    x = 390,774.20/571.68
  6. Step 6: Final answer
    x = 683.55

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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.