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Finding the Fourth Proportional to 674.76, 928.95 and 508.68

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Solution

The fourth proportional to 674.76, 928.95 and 508.68 is: 700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.76 : 928.95 = 508.68 : x
  2. Step 2: Convert to fraction form
    674.76/928.95 = 508.68/x
  3. Step 3: Cross multiply
    674.76x = 928.95 × 508.68
  4. Step 4: Simplify right side
    674.76x = 472,538.29
  5. Step 5: Solve for x
    x = 472,538.29/674.76
  6. Step 6: Final answer
    x = 700.31

Related Problems

Find fourth proportional to 337.38, 464.48 and 254.34
Half scale
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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.