Home / 1,137.10-1,705.59-315.35

Finding the Fourth Proportional to 1,137.10, 1,705.59 and 315.35

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Solution

The fourth proportional to 1,137.10, 1,705.59 and 315.35 is: 473.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.10 : 1,705.59 = 315.35 : x
  2. Step 2: Convert to fraction form
    1,137.10/1,705.59 = 315.35/x
  3. Step 3: Cross multiply
    1,137.10x = 1,705.59 × 315.35
  4. Step 4: Simplify right side
    1,137.10x = 537,857.81
  5. Step 5: Solve for x
    x = 537,857.81/1,137.10
  6. Step 6: Final answer
    x = 473.01

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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.