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Finding the Fourth Proportional to 707.21, 975.62 and 458.61

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Solution

The fourth proportional to 707.21, 975.62 and 458.61 is: 632.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.21 : 975.62 = 458.61 : x
  2. Step 2: Convert to fraction form
    707.21/975.62 = 458.61/x
  3. Step 3: Cross multiply
    707.21x = 975.62 × 458.61
  4. Step 4: Simplify right side
    707.21x = 447,429.09
  5. Step 5: Solve for x
    x = 447,429.09/707.21
  6. Step 6: Final answer
    x = 632.67

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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.