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Finding the Fourth Proportional to 1,015.07, 1,400.75 and 572.94

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Solution

The fourth proportional to 1,015.07, 1,400.75 and 572.94 is: 790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.07 : 1,400.75 = 572.94 : x
  2. Step 2: Convert to fraction form
    1,015.07/1,400.75 = 572.94/x
  3. Step 3: Cross multiply
    1,015.07x = 1,400.75 × 572.94
  4. Step 4: Simplify right side
    1,015.07x = 802,545.71
  5. Step 5: Solve for x
    x = 802,545.71/1,015.07
  6. Step 6: Final answer
    x = 790.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.