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Finding the Fourth Proportional to 953.30, 1,428.93 and 624.12

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Solution

The fourth proportional to 953.30, 1,428.93 and 624.12 is: 935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.30 : 1,428.93 = 624.12 : x
  2. Step 2: Convert to fraction form
    953.30/1,428.93 = 624.12/x
  3. Step 3: Cross multiply
    953.30x = 1,428.93 × 624.12
  4. Step 4: Simplify right side
    953.30x = 891,818.43
  5. Step 5: Solve for x
    x = 891,818.43/953.30
  6. Step 6: Final answer
    x = 935.50

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Double scale
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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.