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Finding the Fourth Proportional to 672.53, 928.08 and 373.77

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Solution

The fourth proportional to 672.53, 928.08 and 373.77 is: 515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.53 : 928.08 = 373.77 : x
  2. Step 2: Convert to fraction form
    672.53/928.08 = 373.77/x
  3. Step 3: Cross multiply
    672.53x = 928.08 × 373.77
  4. Step 4: Simplify right side
    672.53x = 346,888.46
  5. Step 5: Solve for x
    x = 346,888.46/672.53
  6. Step 6: Final answer
    x = 515.80

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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.