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Finding the Fourth Proportional to 764.41, 1,054.89 and 432.87

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Solution

The fourth proportional to 764.41, 1,054.89 and 432.87 is: 597.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.41 : 1,054.89 = 432.87 : x
  2. Step 2: Convert to fraction form
    764.41/1,054.89 = 432.87/x
  3. Step 3: Cross multiply
    764.41x = 1,054.89 × 432.87
  4. Step 4: Simplify right side
    764.41x = 456,630.23
  5. Step 5: Solve for x
    x = 456,630.23/764.41
  6. Step 6: Final answer
    x = 597.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.