Home / 1,056.39-1,584.68-315.99

Finding the Fourth Proportional to 1,056.39, 1,584.68 and 315.99

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Solution

The fourth proportional to 1,056.39, 1,584.68 and 315.99 is: 474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.39 : 1,584.68 = 315.99 : x
  2. Step 2: Convert to fraction form
    1,056.39/1,584.68 = 315.99/x
  3. Step 3: Cross multiply
    1,056.39x = 1,584.68 × 315.99
  4. Step 4: Simplify right side
    1,056.39x = 500,741.45
  5. Step 5: Solve for x
    x = 500,741.45/1,056.39
  6. Step 6: Final answer
    x = 474.01

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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.