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Finding the Fourth Proportional to 673.30, 930.45 and 525.68

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Solution

The fourth proportional to 673.30, 930.45 and 525.68 is: 726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.30 : 930.45 = 525.68 : x
  2. Step 2: Convert to fraction form
    673.30/930.45 = 525.68/x
  3. Step 3: Cross multiply
    673.30x = 930.45 × 525.68
  4. Step 4: Simplify right side
    673.30x = 489,118.96
  5. Step 5: Solve for x
    x = 489,118.96/673.30
  6. Step 6: Final answer
    x = 726.45

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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.