Home / 1,570.02-2,355.19-645.04

Finding the Fourth Proportional to 1,570.02, 2,355.19 and 645.04

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Solution

The fourth proportional to 1,570.02, 2,355.19 and 645.04 is: 967.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.02 : 2,355.19 = 645.04 : x
  2. Step 2: Convert to fraction form
    1,570.02/2,355.19 = 645.04/x
  3. Step 3: Cross multiply
    1,570.02x = 2,355.19 × 645.04
  4. Step 4: Simplify right side
    1,570.02x = 1,519,191.76
  5. Step 5: Solve for x
    x = 1,519,191.76/1,570.02
  6. Step 6: Final answer
    x = 967.63

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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.