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Finding the Fourth Proportional to 651.96, 976.14 and 435.60

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Solution

The fourth proportional to 651.96, 976.14 and 435.60 is: 652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.96 : 976.14 = 435.60 : x
  2. Step 2: Convert to fraction form
    651.96/976.14 = 435.60/x
  3. Step 3: Cross multiply
    651.96x = 976.14 × 435.60
  4. Step 4: Simplify right side
    651.96x = 425,206.58
  5. Step 5: Solve for x
    x = 425,206.58/651.96
  6. Step 6: Final answer
    x = 652.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.