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Finding the Fourth Proportional to 673.25, 929.07 and 378.51

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Solution

The fourth proportional to 673.25, 929.07 and 378.51 is: 522.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.25 : 929.07 = 378.51 : x
  2. Step 2: Convert to fraction form
    673.25/929.07 = 378.51/x
  3. Step 3: Cross multiply
    673.25x = 929.07 × 378.51
  4. Step 4: Simplify right side
    673.25x = 351,663.71
  5. Step 5: Solve for x
    x = 351,663.71/673.25
  6. Step 6: Final answer
    x = 522.34

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Double scale
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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.