Home / 953.15-1,429.10-405.18

Finding the Fourth Proportional to 953.15, 1,429.10 and 405.18

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Solution

The fourth proportional to 953.15, 1,429.10 and 405.18 is: 607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.15 : 1,429.10 = 405.18 : x
  2. Step 2: Convert to fraction form
    953.15/1,429.10 = 405.18/x
  3. Step 3: Cross multiply
    953.15x = 1,429.10 × 405.18
  4. Step 4: Simplify right side
    953.15x = 579,040.71
  5. Step 5: Solve for x
    x = 579,040.71/953.15
  6. Step 6: Final answer
    x = 607.51

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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.