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Finding the Fourth Proportional to 673.74, 929.65 and 438.01

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Solution

The fourth proportional to 673.74, 929.65 and 438.01 is: 604.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.74 : 929.65 = 438.01 : x
  2. Step 2: Convert to fraction form
    673.74/929.65 = 438.01/x
  3. Step 3: Cross multiply
    673.74x = 929.65 × 438.01
  4. Step 4: Simplify right side
    673.74x = 407,196.00
  5. Step 5: Solve for x
    x = 407,196.00/673.74
  6. Step 6: Final answer
    x = 604.38

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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.