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Finding the Fourth Proportional to 953.07, 1,429.49 and 259.69

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Solution

The fourth proportional to 953.07, 1,429.49 and 259.69 is: 389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.07 : 1,429.49 = 259.69 : x
  2. Step 2: Convert to fraction form
    953.07/1,429.49 = 259.69/x
  3. Step 3: Cross multiply
    953.07x = 1,429.49 × 259.69
  4. Step 4: Simplify right side
    953.07x = 371,224.26
  5. Step 5: Solve for x
    x = 371,224.26/953.07
  6. Step 6: Final answer
    x = 389.50

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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.