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Finding the Fourth Proportional to 572.59, 858.90 and 328.99

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Solution

The fourth proportional to 572.59, 858.90 and 328.99 is: 493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.59 : 858.90 = 328.99 : x
  2. Step 2: Convert to fraction form
    572.59/858.90 = 328.99/x
  3. Step 3: Cross multiply
    572.59x = 858.90 × 328.99
  4. Step 4: Simplify right side
    572.59x = 282,569.51
  5. Step 5: Solve for x
    x = 282,569.51/572.59
  6. Step 6: Final answer
    x = 493.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 573.59, 860.40 and 329.99
Similar ratio
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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.