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Finding the Fourth Proportional to 545.35, 751.40 and 370.39

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Solution

The fourth proportional to 545.35, 751.40 and 370.39 is: 510.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.35 : 751.40 = 370.39 : x
  2. Step 2: Convert to fraction form
    545.35/751.40 = 370.39/x
  3. Step 3: Cross multiply
    545.35x = 751.40 × 370.39
  4. Step 4: Simplify right side
    545.35x = 278,307.29
  5. Step 5: Solve for x
    x = 278,307.29/545.35
  6. Step 6: Final answer
    x = 510.33

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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.