Home / 1,510.90-2,266.55-415.30

Finding the Fourth Proportional to 1,510.90, 2,266.55 and 415.30

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Solution

The fourth proportional to 1,510.90, 2,266.55 and 415.30 is: 623.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.90 : 2,266.55 = 415.30 : x
  2. Step 2: Convert to fraction form
    1,510.90/2,266.55 = 415.30/x
  3. Step 3: Cross multiply
    1,510.90x = 2,266.55 × 415.30
  4. Step 4: Simplify right side
    1,510.90x = 941,298.22
  5. Step 5: Solve for x
    x = 941,298.22/1,510.90
  6. Step 6: Final answer
    x = 623.00

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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.