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Finding the Fourth Proportional to 487.83, 673.71 and 404.10

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Solution

The fourth proportional to 487.83, 673.71 and 404.10 is: 558.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.83 : 673.71 = 404.10 : x
  2. Step 2: Convert to fraction form
    487.83/673.71 = 404.10/x
  3. Step 3: Cross multiply
    487.83x = 673.71 × 404.10
  4. Step 4: Simplify right side
    487.83x = 272,246.21
  5. Step 5: Solve for x
    x = 272,246.21/487.83
  6. Step 6: Final answer
    x = 558.08

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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.