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Finding the Fourth Proportional to 476.58, 718.37 and 435.54

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Solution

The fourth proportional to 476.58, 718.37 and 435.54 is: 656.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.58 : 718.37 = 435.54 : x
  2. Step 2: Convert to fraction form
    476.58/718.37 = 435.54/x
  3. Step 3: Cross multiply
    476.58x = 718.37 × 435.54
  4. Step 4: Simplify right side
    476.58x = 312,876.69
  5. Step 5: Solve for x
    x = 312,876.69/476.58
  6. Step 6: Final answer
    x = 656.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.