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Finding the Fourth Proportional to 707.28, 975.30 and 458.60

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Solution

The fourth proportional to 707.28, 975.30 and 458.60 is: 632.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.28 : 975.30 = 458.60 : x
  2. Step 2: Convert to fraction form
    707.28/975.30 = 458.60/x
  3. Step 3: Cross multiply
    707.28x = 975.30 × 458.60
  4. Step 4: Simplify right side
    707.28x = 447,272.58
  5. Step 5: Solve for x
    x = 447,272.58/707.28
  6. Step 6: Final answer
    x = 632.38

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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.